Washing machine for auto-added washing agent by negative pressure and controlling method thereof
US9340918B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 3, 2010 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2105/42
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A washing machine for automatically adding the detergent by negative pressure comprises a water inlet, a detergent container and a tub. A main inflow waterway and a rinse waterway are provided between the water inlet and the tub. A dosing container which communicates with the detergent container is provided between the rinse waterway and the tub. A venturi tube is provided in the main inflow waterway. Due to venturi effect, the main inflow water stream becomes narrower and the water inflowing velocity is accelerated, so that a relative vacuum area which communicates with the dosing container is formed at the rear side of the venturi tube outlet, negative pressure is generated in the dosing container, and the detergent in the detergent container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.